Forester 25" .050 3/8" Chainsaw Bar for Stihl D025 Fits These Models in 3/8" pitch. 024, 026, 028, 030, 031, 032, 034, 036, 038, 040, 041, 042, 044, 045, 046, 048, 064, 066 and MS equals. Fits MS models like MS660, MS310, MS440, MS460, and many other.